Usage of R Packages
For Windows OS
To install and use packages in R on a 64-bit Windows system, follow these steps:
1. Install Packages from CRAN
The Comprehensive R Archive Network (CRAN) hosts numerous R packages. To install a package from CRAN:
Open RStudio
Console.Use the
install.packages()function with the package name in quotes:install.packages("package_name")For example, to install the
ggplot2package:install.packages("ggplot2")If prompted, select a CRAN mirror close to your location.
2. Install Packages from Bioconductor
Bioconductor provides packages for bioinformatics. To install packages from Bioconductor:
Install the BiocManager package if not already installed:
install.packages("BiocManager")Use
BiocManager::install()to install the desired package:BiocManager::install("package_name")For example, to install the
limmapackage:BiocManager::install("limma")
3. Install Packages from GitHub
Some packages are hosted on GitHub. To install them:
Install the
devtoolspackage if not already installed:install.packages("devtools")Use
devtools::install_github()with the repository name:devtools::install_github("username/repository")For example, to install the
ggplot2package from its GitHub repository:devtools::install_github("tidyverse/ggplot2")
4. Load Installed Packages
After installation, load a package into your R session using the library() function:
library(package_name)For example, to load the ggplot2 package:
library(ggplot2)Once loaded, you can access the functions and datasets provided by the package.
5. Verify Package Installation
To confirm that a package is installed:
Use the
installed.packages()function:installed_packages <- installed.packages() "package_name" %in% rownames(installed_packages)This returns
TRUEif the package is installed, otherwiseFALSE.
6. Update Installed Packages
Regularly update packages to incorporate improvements and bug fixes:
To update all installed packages:
update.packages()To update a specific package:
install.packages("package_name")
7. Remove Installed Packages
To uninstall a package:
remove.packages("package_name")For example, to remove the ggplot2 package:
remove.packages("ggplot2")By following these steps, you can effectively manage R packages on your Windows system.
For macOS
Installing R packages in macOS is strikingly similar to Windows systems.
What’s Next?
Go back to Starting Page
Go back to Installation Guide
Go to the last guide: Required Packages for Training